Published February 21, 2020
| Version Published
Journal Article
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Search for Rare or Forbidden Decays of the D⁰ Meson
Abstract
We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type D⁰→h'⁻h⁻ℓ'⁺ℓ⁺ and D⁰→h'⁻h⁺ℓ'±ℓ∓, where h and h′ represent a K or π meson and ℓ and ℓ′ an electron or muon. The analysis is based on 468 fb⁻¹ of e⁺e⁻ annihilation data collected at or close to the Υ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. No significant signal is observed for any of the twelve modes, and we establish 90% confidence level upper limits on the branching fractions in the range (1.0–30.6)×10⁻⁷. The limits are between 1 and 3 orders of magnitude more stringent than previous measurements.
Additional Information
© 2020 Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3. Received 16 May 2019; accepted 23 January 2020; published 19 February 2020. We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues, and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (USA), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (Netherlands), NFR (Norway), MES (Russia), MINECO (Spain), STFC (United Kingdom), BSF (USA-Israel). Individuals have received support from the Marie Curie EIF (European Union) and the A. P. Sloan Foundation (USA).Attached Files
Published - PhysRevLett.124.071802.pdf
Files
PhysRevLett.124.071802.pdf
Additional details
Identifiers
- Eprint ID
- 101395
- Resolver ID
- CaltechAUTHORS:20200219-135109000
Funding
- Department of Energy (DOE)
- NSF
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Commissariat à l'énergie atomique (CEA)
- Centre National de la Recherche Scientifique (CNRS)
- Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)
- Bundesministerium für Bildung und Forschung (BMBF)
- Deutsche Forschungsgemeinschaft (DFG)
- Istituto Nazionale di Fisica Nucleare (INFN)
- Stichting voor Fundamenteel Onderzoek der Materie (FOM)
- Research Council of Norway
- Ministry of Education and Science of the Russian Federation
- Ministerio de Economía, Industria y Competitividad (MINECO)
- Science and Technology Facilities Council (STFC)
- Binational Science Foundation (USA-Israel)
- Marie Curie Fellowship
- Alfred P. Sloan Foundation
- SCOAP3
Dates
- Created
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2020-02-19Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field